Arbor-press.



Patented Dec. I7, 190K.

E. E. B ARTLETT.

ARBUR PRESS. (Appximiop ma my s1, 1900.)

."(ld Model.)

lagffj2me/Wlan'. a

.www

. IAF

UNrrsv arent Fries.

RBORWPRESS.

SEECIFICATLQN forming part of Letters Patent No. 689,154, dated December 17', 1901..

Application filed May 31. 1900. Serial No. 18,515. (No model.)

To all 107mm it may concern:

Be it known that I, EDWIN ELLswoRTH BARTLETT, of Hydepark, in the county of Norfolk and State of Massachusetts, have invented an Improved Arbor-Press, of which the following is a specification, reference being had to the accompanying drawings, in which- Figure 1 is a front elevation of one of my improved arbor-presses. Fig. 2 is a side elevation of the machine shown in Fig. 1 with the lever and ratchet removed. Fig. 8 is a detail hereinafter described. Fig. 4 is a detail of the work-support hereinafter described.

The main object of my invention is to increase the capacity and power of the arborpress described in the Patent No. 464,316 to Robert C. Greenerd, dated December 1, 1891, and also to prevent injury to the arbor when it is forced out of its collar by the press.

My press consists of the usual ram, means for applying power to the ram, a knee or abutment for supporting the collar of the arbor, and means to catch the arbor when it is forced out of its collar by the ram; and my invention consists, iirst, in the combination of two pinions with the rack of the ram and means for applying power to both pinions; secondly, in mounting the knee as a slide on the frame of the press and supporting the knee on a screw in order that the knee may be adjusted relatively to the ram, and, thirdly, in a cushioned cup arranged to catch the arbor as it falls from the collar.

In the drawings, A is the ram, of the usual construction-#that is, it is a steel plunger with a rack a on one side of it and is mounted to reciprocate in the head of the frame, as usual; but instead of a single pinionshaft B, actuated by lever D, as heretofore, I use an additional pinion-shaft B and two gears b b', one on shaft B and the other on shaft B', both gears b and b meshing with the driving-gear f on driving-shaft F, and actuate shaft F by lever D, which acts through pawl d on ratchet d. Ratchet d is loose on shaft B and fast to gear f2, also loose on shaft B, and gear f2 meshes with gear f3, fast on shaft F.l This is for many reasons the best way of applying power through leverD to shaft F, but is not, of course, essential to this feature of my in- Vention, which consists in using the two pin-v ion-shafts B and B', both' geared to the drivingshaft F, my main object being to reduce the diameter of the pinions, and thereby increase the power applied to ram A with a given lever D, for although as a matter of `theory the diameter of the singlepinion heretofore used might be reduced, yet practically that is impossible without making it" too weak for practical use, and it is for that reason that I use two pinions and gear both to a single driving-shaft.

The knee G is mounted to slide on the frame toward and from ram A and rests on the head g of screw g', and as head g is a bevel-gear fast to screw g' knee G can be adjusted toward and from ram A by turning bevel-gear g2 ou shaft g3 by winch g4, thereby turning screw g' into and out of its threaded socket g5. This is the second feature of my invention, and its obj ect is to increase the capacity of the press, for the sliding knee supported upon an adjusting screw can be readily brought into proper relation with the ram for a given length of arbor, and thereby do away with the extent of motion of the ram hereto fore required.

When the arbor is forced out of its collar, it falls endwise into the cup H, which is cush-V ioned by spring h, so that the arbor is received and held by the cup without damage to the arbor, and this, the third feature of my invention, is of considerable practical` value and importance, especially when the larger sizes of arbors are pressed out of their collars.

In assembling the parts it is of course ini-l portant to cause both pinions on shafts B B to bear on the rack on plunger A, so that the strain when the press is in use will be equally divided (as nearly as may be) between the pinion-teeth on the shafts B B".

The work-support t' on knee G is formed with a V-shaped socket, as shown clearly in Fig. 4, and is movable on knee G, so that said socket may be adjusted relatively to ram A according to the diameter of the arbor which is to be operated upon and so that it may be used to support arbors of different sizes. Upon the under side of support is a tongue c", which ts into a groove upon the top of knee G and by which it is guided when moved on knee G. Support il is also guided by bars 2, fast at one end in the frame of the press IOC) and Whose other end projects into sockets in support 't' and bear against springs 'i3 in said sockets.

What I claim as my invention is- I. In combination a ram with a rack on one side of it; two pinions each iu mesh with that rack; two pinion-shafts one for one pinion the other for the other pinion and both on the same side of the rack on the ram; two gears one on one pinion-shaft the other on the other pinionshaft; adriving-shaft; a driving-gear on that shaft in mesli With both pinion-shaft gears; and means for applying power to the driving-shaft.

2. In combination a ram; means for reciprocating it; an abutment mounted to slide toward and from the ram and With an opening through it directly under the ram; a screw supporting that abutment on its upper end and close to one side of the opening through the abutment; a nut for that screw; and

' means for turning the screw and thereby adj listing the abutment with relation to the ram, and holding the abutment by means of the adjusting-screw under the pressure of the' ram.

3. In combination, a ram; means for reoiprocating it; a knee or abutment for supporting a collar upon an arbor; and a cushioned cup to receive the arbor when forced out of its collar by the action of the ram;

EDWIN EL'LSWORTH BARTLETT;

Witnesses:

JOHN R. SNOW, CAUSTEN BROWNE MAYNADIER. 

